The sickening rush of Sylar's heartbeat suddenly reverberates outward, squeezing at what little air is left in his lungs.

"No." He tries to move, put as much distance between himself and Dr. Tam as he can. He can't take his eyes off the tuning fork, but just as sudden, the initial panic veers sharply, returning to the stream of hatred as he spits, in hitching starts, "I had no reason to deal with you or your wife, but if you -- run your little test I will kill you both, Doctor."